Hawking, S. (2008). The theory of everything: The origin and fate of universe.
Chicago Style aipamenaHawking, Stephen. The Theory of Everything: The Origin and Fate of Universe. Jaico Publishing PVT LTD, 2008.
MLA aipamenaHawking, Stephen. The Theory of Everything: The Origin and Fate of Universe. 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.